According to one Russian magazine it is, and the title even lists specifications for the MacBook Air-like machine, website 9to5mac notes.

Well, kind of. There are some inconsistencies. The 10.4in, 1280 x 768, LED-backlit display seems reasonable enough, but a 1.83GHz Intel Atom Z740? The 1.86GHz Z540, more like, though it only has 512KB of L2 cache, whereas the Russians claoim 1MB for the mysterious Z740.

Real or fake? Well, it's possibly no coincidence that April Fool's Day comes in a couple of days. It could certainly be a good piece of Photoshoppery, but we note that the function key line contains 13 keys. The Air has 14. Would a faker working from MacBook and MacBook Air snaps really think to take out a single Fn key? ®